.\"	$OpenBSD: carg.3,v 1.2 2013/06/05 03:40:26 tedu Exp $
.\"
.\" Copyright (c) 2011 Martynas Venckus <martynas@openbsd.org>
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.Dd $Mdocdate: June 5 2013 $
.Dt CARG 3
.Os
.Sh NAME
.Nm carg ,
.Nm cargf ,
.Nm cargl
.Nd complex argument functions
.Sh SYNOPSIS
.In complex.h
.Ft double
.Fn carg "double complex z"
.Ft float
.Fn cargf "float complex z"
.Ft long double
.Fn cargl "long double complex z"
.Sh DESCRIPTION
The
.Fn carg ,
.Fn cargf
and
.Fn cargl
functions compute the argument (also called phase angle) of
.Fa z ,
with a branch cut on the negative real axis.
.Sh RETURN VALUES
The
.Fn carg ,
.Fn cargf
and
.Fn cargl
functions return the argument in the interval
.Bq -Pi, Pi .
.Sh SEE ALSO
.Xr cimag 3
.Sh STANDARDS
The
.Fn carg ,
.Fn cargf
and
.Fn cargl
functions conform to
.St -isoC-99 .
